22 TECHNICAL PAPER Refractory Considerations for
Figure 8 Condition of refractory material for aluminum melting furnace after alkali testing at 1100°C with K 2 CO 3 /Na CO (A) refractory in use (B) new formulation 20 In aluminum melting/holding furnaces the alkalies are assumed to react with silicates in the refractory forming a glass which seals the pores and prevents further destruction.
Get Price
UNIVERSITY OF CALCUTTA
6. Influence of gel-derived nanocrystalline spinel in a high alumina castable Part 2 Ceramics International 33(2)(2007) 7. Spinel-Coated Graphite for Carbon Containing Refractory Castables Journal of the American Ceramic Society. 92(8)(2009) 8. Improved sol gel spinel ( MgAl 2
Get Price
Significant improvement of refractoriness of Al2O3–C
Apr 01 2014 · Apart from graphite and cement fines the matrix part included aluminum powder (0.5 ) microfine alumina (10.0 ) microsilica (0.5 ) and 8.0 commercial alumina-rich preformed MgAl 2 O 4 spinel fines (with Al 2 O 3 =78 ). C and C− codes were used as usual for castables containing respectively coated and uncoated graphites.
Get Price
USARefractory for aluminum-melting furnaces
An improved alumina or alumino-silicate refractory for lining aluminum-melting furnaces and other containers for molten aluminum including 0.5 to 30 by weight of BaSO 4 . The addition of BaSO 4 to a phosphate-bonded or phosphate-free plastic ramming mix brick mortar or castables eliminates metal penetration and reduces dross and metal adherence.
Get Price
Analysis on mechanism of explosive spalling resistance of
Aug 01 2020 · 2.2. Testing and characterization. Spalling tests were conducted on aluminum-containing castable specimens of 230 mm 115 mm 60 mm. The specimens were released from the mold after curing at 30 °C for 24 h and then placed in an electric furnace at a target holding temperature (from 500 °C) for 30 min and observed whether the specimen was cracked or disintegrated.
Get Price
Latest Development in Refractory Monolithics
2 of 11 Based on that steel ladle lining represents an important cost factor in steel not only for refractory cost itself but mainly for operational cost e.g. production losses due to relining vessel unavailability incidents and lack of reliability. In a recent congress in
Get Price
Reference TP-GB-RE-LAF-078 Page 1/9 MINERALOGY AND
Refractory castables are semi-finished products when supplied as dry-mix to the end-user. The high temperature resistant phase CA2 is the main CaO containing phase at 1100°C matrix part is shown in the Tab. 2. The phase quantification has been carried out using the Rietveld method 2
Get Price
Spinel-containing alumina-based refractory castables
Aug 01 2011 · Due to their high corrosion resistance to basic slags either pre-formed or in situ spinel (MgAl 2 O 4) containing refractory castables are nowadays widely used as steel ladle linings.Nevertheless whereas the pre-formed spinel castables present high volumetric stability and a well-known processing technology the in situ spinel castables still require further understanding due
Get Price
Significant improvement of refractoriness of Al2O3–C
Apr 01 2014 · Apart from graphite and cement fines the matrix part included aluminum powder (0.5 ) microfine alumina (10.0 ) microsilica (0.5 ) and 8.0 commercial alumina-rich preformed MgAl 2 O 4 spinel fines (with Al 2 O 3 =78 ). C and C− codes were used as usual for castables containing respectively coated and uncoated graphites.
Get Price
Title and Author Table Presentation List (Tentative) Title
Recycled Raw Materials in Refractory CastablesPart 2/3 Influence of Water Soluble Ions From Recycled Refractory Raw Materials on the Dispersion and Coagulation of the Matrix Suspension of CAC-Bonded Refractory Castables Johannes Kasper Christian Dannert Alexandra Koch Olaf Krause
Get PriceProceedings of the Unified International Technical
DANA G. GOSKI PHD is the Director of Research at Allied Mineral Products in Columbus Ohio. Dr. Goski earned her PhD in Engineering from Dalhousie University Canada. She is a member of The American Ceramic Society s (ACerS) Refractories Division a co-inventor on a number of international patents and an ardent supporter of science and engineering educational outreach activities.
Get Price
Refractory castable engineering Semantic Scholar
Advanced boron-containing refractory castables bonded with calcium-free binders. I. D. Giovannelli-Maizo A. P. Luz Aluminum lactate role in improving hydration and drying behavior of MgO-bonded refractory castables. Cement-Free Refractory Concretes. Part 5. Cement-Free Refractory Concretes Based on Hydraulic Alumina Binders.
Get Price
Significant improvement of refractoriness of Al2O3–C
Apr 01 2014 · Apart from graphite and cement fines the matrix part included aluminum powder (0.5 ) microfine alumina (10.0 ) microsilica (0.5 ) and 8.0 commercial alumina-rich preformed MgAl 2 O 4 spinel fines (with Al 2 O 3 =78 ). C and C− codes were used as usual for castables containing respectively coated and uncoated graphites.
Get Price
Refractory Products and Monolithics HWI
Check out our selection of leading refractory products. Search our wide range of bricks monolithics high-temperature insulation materials fiber insulating firebrick and precast shapes. For a closer look access our product data sheets by registering at our business portal.
Get Price
Improvements of properties of alumina-silica refractory
Aug 15 2020 · Castables have been widely used in repairing furnace linings owing to their numerous verified benefits. Al 2 O 3 coated Al powders (ACAPs) were prepared to prevent their hydration during castable preparing. The effect of ACAPs on the properties of cement-bonded Al 2 O 3 –SiO 2 refractory castables under simulated coke drying quenching (CDQ) conditions was investigated.
Get Price
International Online-Seminar Refractory Technology
2-3 days before seminar s starting you receive an e-mail cement / Raw material concept for refractory castables / New developments 09 45 Shaped refractory products based on aluminum Werner Schönwelski Fireclay and high alumina / Fired bricks / Carbon containing
Get Price
Reactive processing of ceramic binding systems for
The general applied objective of this project is to develop hydratable alumina-bonded castables of properties comparable to the high-temperature fired basic bricks. This work is focused on improving the sintering of the ceramic binding systems at relatively low temperatures ( 1300°C) through incorporation of ultrafine powders. Ultrafine magnesium aluminate spinel powders were synthesized
Get Price
Nickel aluminide containing refractory-metal dispersoids 2
Nickel aluminide containing refractory-metal dispersoids 2 Microstructure and properties T. Takahashi" D.C. Dunandb (Part 2) we report on the microstruc- ture hardness and oxidation behavior of the disper- aluminum with average size 150 ym 99.9 -pure
Get Price
Refractory Castable EngineeringABCERAM
4. Roles of aluminum powder 399 5. Final remarks 408 6. References 411 7. Further reading 418 Chapter 7 Magnesia-containing refractory castables 1. Introduction 419 2. Magnesia hydration mechanisms 422 3. Magnesia hydration e ects on refractory castables 427 3.1. Selecting the most suitable magnesia source 427 3.2.
Get Price
Effect of Deflocculants on High Alumina Low Cement
a. certificate 2 b. acknowledgement 3 c. abstract 6 d. list of tables 7 e. list of figures 7 f. list of abbreviations 8 1. introduction 9 2. literature review 13 2.1. refractory cements 14 2.2. monolithics 15 2.3. castables 16 2.4. particle size distribution 16 2.5. reactions involved in firing castables 18 3. experimental 19 3.1.
Get PriceReference TP-GB-RE-LAF-078 Page 1/9 MINERALOGY AND
Refractory castables are semi-finished products when supplied as dry-mix to the end-user. The high temperature resistant phase CA2 is the main CaO containing phase at 1100°C matrix part is shown in the Tab. 2. The phase quantification has been carried out using the Rietveld method 2
Get Price
Refractory Castable EngineeringABCERAM
4. Roles of aluminum powder 399 5. Final remarks 408 6. References 411 7. Further reading 418 Chapter 7 Magnesia-containing refractory castables 1. Introduction 419 2. Magnesia hydration mechanisms 422 3. Magnesia hydration e ects on refractory castables 427 3.1. Selecting the most suitable magnesia source 427 3.2.
Get PriceDispersing (Deflocculating) Aluminas SpringerLink
Alumina dispersants make it possible to decrease the moisture content of Al 2 O 3 suspensions by 5060 rel. and increase their volume concentration from 0.50 to 0.65. The characteristics of dispersing aluminas used for the thinning (deflocculation) of new refractory castables containing Al 2 O 3 (7696 ) and organic deflocculants are
Get Price
(PDF) Aluminum-containing refractory castables Part 2
Aluminum powder is a raw material widely used in refractory castables mainly as an antioxidant in carbon-containing compositions or as a gas-generating additive in castables susceptible to
Get Price
IS 10570 (2011) METHODS OF TESTING REFRACTORY
IS 10570 2011 2 3.2.1.2 Insulating castable — Bulk density having a maximum of 1.85 g/cc (Measured as per 8.3.2 and 8.3.4). 3.2.2 Low Cement Castable Type-II — A castable containing calcium oxide greater than 1.0 percent and maximum of 2.5 percent on a calcined basis.
Get Price
